TRICARE California: Plans, Providers & 2026 West Region Info

*Note: TRICARE.com is an independent reference site and is not the official TRICARE program. For official policy and the most current data, visit TRICARE.mil.*

## TRICARE in California California is part of the **TRICARE West Region**. As of January 1, 2025, the regional contractor for California is **TriWest Healthcare Alliance**, which managed the transition from the previous contractor, Health Net Federal Services (HNFS). Beneficiaries in California have access to one of the largest networks of military and civilian providers in the country due to the state's high density of military installations.

## Major military installations California hosts a significant military presence across all branches. Key installations include: * **Camp Pendleton** (Marine Corps) – Oceanside/San Clemente * **Naval Base San Diego** (Navy) – San Diego * **Travis Air Force Base** (Air Force) – Fairfield * **Fort Irwin National Training Center** (Army) – San Bernardino County * **Beale Air Force Base** (Air Force) – Marysville * **Marine Corps Air Station Miramar** (Marine Corps) – San Diego * **Naval Air Station Lemoore** (Navy) – Lemoore * **Vandenberg Space Force Base** (Space Force) – Lompoc

## Plans available in California Residents of California can choose from several TRICARE plans depending on their service status and location:

| Plan Type | Eligibility/Description | | :--- | :--- | | **TRICARE Prime** | Managed care option; required for active duty, available to others in Prime Service Areas. | | **TRICARE Select** | PPO-style plan offering the most flexibility in choosing providers; no referrals required. | | **TRICARE Reserve Select (TRS)** | Premium-based plan for qualified Selected Reserve members. | | **TRICARE Retired Reserve (TRR)** | Premium-based plan for retired Reserve members under age 60. | | **TRICARE For Life (TFL)** | Wrap-around coverage for those with Medicare Part A and B. | | **TRICARE Young Adult** | Option for adult children who have aged out of regular TRICARE but are under 26. |

*Note: The **US Family Health Plan (USFHP)** is not currently available in California.*

## Finding care in California To find a doctor, California beneficiaries should use the **TriWest Healthcare Alliance provider directory**.

* **Network vs. Non-Network:** Using network providers will result in lower out-of-pocket costs and lower 2026 copays. If you are on TRICARE Prime, you generally must see a network provider or your Military Treatment Facility (MTF) to avoid Point-of-Service charges. * **Military Hospitals:** Major hubs like the Naval Medical Center San Diego (Balboa Hospital) and David Grant USAF Medical Center at Travis AFB serve as primary care anchors. * **Telehealth:** TriWest provides a robust telehealth network for California residents, which is particularly useful for those in rural areas like the High Desert or the Sierra Foothills. Referrals may still be required for specialty telehealth services if you are on a Prime plan.

Common questions for California beneficiaries

**I am PCSing to California. What is the first step?** Once you arrive, update your address in the Defense Enrollment Eligibility Reporting System (DEERS). Because California is in the West Region, you will coordinate care through TriWest. If you are moving from the East Region, your coverage must be transferred to the West Region to ensure claims are processed correctly.

**Does TRICARE work with Medi-Cal?** Yes, but TRICARE is always the secondary payer to most other health insurance plans, including employer-sponsored insurance. However, TRICARE pays *after* Medicaid (Medi-Cal in California). If you have both, Medi-Cal is the payer of last resort.

**Can I see a civilian doctor in San Diego if I’m on Prime?** If you are enrolled in TRICARE Prime and live near a base like Camp Pendleton or Naval Base San Diego, you are likely in a Prime Service Area. You will generally be assigned a Primary Care Manager (PCM) at a military facility. You need a referral from that PCM to see a civilian specialist.

## Sources 1. TRICARE West Region Contractor (TriWest): [https://www.triwest.com/](https://www.triwest.com/) 2. TRICARE.mil Plan Finder: [https://tricare.mil/Plans/PlanFinder](https://tricare.mil/Plans/PlanFinder) 3. Defense Enrollment Eligibility Reporting System (DEERS): [https://idco.dmdc.osd.mil/idco/](https://idco.dmdc.osd.mil/idco/) 4. Military Medical Facilities in California: [https://tricare.mil/mtf](https://tricare.mil/mtf)